Hak-jun Kim

3 Patents

• US126068812026

  High Toughness High Carbon Cold Rolled Steel Sheet Having Excellent Formability, and Method for Manufacturing Same

  POSCO CO., Ltd

  0 cites
• US125955262026

  Hot-rolled Steel Sheet for Hyper Train Tube, and Manufacturing Method for Same

  POSCO CO., Ltd

  0 cites
• US125955392026

  QT Heat Treated High Carbon Hot Rolled Steel Sheet, High Carbon Cold Rolled Steel Sheet, QT Heat Treated High Carbon Cold Rolled Steel Sheet, and Manufacturing Methods Thereof

  POSCO CO., Ltd

  0 cites